Evaluation of Dental Effects of 3D-Printed Twin Block in Growing Patients

Evaluation of Dental Effects of 3D-Printed Twin Block Versus the Conventional Twin Block Regarding Change of Incisive Inclination and Vertical Opening in Growing Patients: A Randomized Controlled Trial

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

PACTR

Registry ID

PACTR202511841936408

Enrollment

Registered

2025-11-06

Start date

2025-10-15

Completion date

Unknown

Last updated

2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

skeletal class II malocclusion

Interventions

3 Dimension Printed Twin block group

Conventional Twin block group

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy patients according to the American Society of Anesthesiology Classification (ASA I and II). Growing children with skeletal Class II relationship (ANB > 4°). Mandibular retrognathia (SNB < 78°). Cooperative child and compliant parents.

Exclusion criteria

Exclusion criteria: Severe chronic conditions such as asthma and allergy, neuropsychiatric disorders, and craniofacial syndromes. Previous history of orthodontic treatment. Posterior crossbites or severe maxillary transverse deficiency. Severe facial asymmetry determined by clinical or radiographical examination. Systemic diseases that may affect the orthodontic treatment results.

Design outcomes

Primary

Measure	Time frame
Change in incisive inclination	—

Secondary

Measure	Time frame
Vertical opening;Skeletal Class II profile correction;Soft tissue convexity correction	—

Countries

Egypt

Contacts

Public ContactSalwa Lotfi

Master student

salwa.lottfy@dentistry.cu.edu.eg01025245124

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Sep 19, 2026